Abstract:
:The E5 protein of human papillomavirus type 16 is a small, hydrophobic protein that localizes predominantly to membranes of the endoplasmic reticulum (ER). To define the orientation of E5 in these membranes, we employed a differential, detergent permeabilization technique that makes use of the ability of low concentrations of digitonin to selectively permeabilize the plasma membrane and saponin to permeabilize all cellular membranes. We then generated a biologically active E5 protein that was epitope tagged at both its N and C termini and determined the accessibility of these termini to antibodies in the presence and absence of detergents. In both COS cells and human ectocervical cells, the C terminus of E5 was exposed to the cytoplasm, whereas the N terminus was restricted to the lumen of the ER. Finally, the deletion of the E5 third transmembrane domain (and terminal hydrophilic amino acids) resulted in a protein with its C terminus in the ER lumen. Taken together, these topology findings are compatible with a model of E5 being a 3-pass transmembrane protein and with studies demonstrating its C terminus interacting with cytoplasmic proteins.
journal_name
J Viroljournal_title
Journal of virologyauthors
Krawczyk E,Suprynowicz FA,Sudarshan SR,Schlegel Rdoi
10.1128/JVI.01968-09subject
Has Abstractpub_date
2010-02-01 00:00:00pages
1696-703issue
4eissn
0022-538Xissn
1098-5514pii
JVI.01968-09journal_volume
84pub_type
杂志文章abstract::Interferon regulatory factor 7 (IRF-7) is implicated in the regulation of Epstein-Barr virus (EBV) latency. EBV transforms primary B cells, and the major EBV oncoprotein, latent membrane protein 1 (LMP-1), is required for the process. LMP-1 both induces the expression of IRF-7 and activates the IRF-7 protein by phosph...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.23.12987-12995.2004
更新日期:2004-12-01 00:00:00
abstract::The oncolytic herpes simplex virus (HSV) that has been approved for clinical practice and those HSVs in clinical trials are attenuated viruses, often with the neurovirulence gene γ134.5 and additional genes deleted. One strategy to engineer nonattenuated oncolytic HSVs consists of retargeting the viral tropism to a ca...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00067-17
更新日期:2017-04-28 00:00:00
abstract::Middle East respiratory syndrome coronavirus (MERS-CoV) causes severe acute respiratory infection with as yet unclear epidemiology. We previously showed that MERS-CoV counteracts parts of the innate immune response in human bronchiolar cells. Here we analyzed accessory proteins 3, 4a, 4b, and 5 for their abilities to ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01845-13
更新日期:2013-11-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.8.6155-6167.1997
更新日期:1997-08-01 00:00:00
abstract::Human T-cell lymphotropic virus type 1 (HTLV-1) is transmitted through a viral synapse and enters target cells via interaction with the glucose transporter GLUT1. Here, we show that Neuropilin-1 (NRP1), the receptor for semaphorin-3A and VEGF-A165 and a member of the immune synapse, is also a physical and functional p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02719-05
更新日期:2006-07-01 00:00:00
abstract::The minor glycoproteins from hepatitis B surface antigen, GP33 and GP36, contain at their carboxy-terminal part the sequence of the major protein P24. They have 55 additional amino acids at the amino-terminal part which are coded by the pre-S region of the viral DNA. ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.46.2.626-628.1983
更新日期:1983-05-01 00:00:00
abstract::Zika virus (ZIKV), a mosquito-transmitted flavivirus, is linked to microcephaly and other neurological defects in neonates and Guillain-Barré syndrome in adults. The molecular mechanisms regulating ZIKV infection and pathogenic outcomes are incompletely understood. Signaling by the mechanistic (mammalian) target of ra...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01575-20
更新日期:2020-10-27 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.24.13101-13105.2002
更新日期:2002-12-01 00:00:00
abstract::The polyomavirus proteins VP1, VP2, and VP3 move from their cytoplasmic site of synthesis into the nucleus, where virus assembly occurs. To identify cellular or viral components which might control this process, we determined the distribution of VP1, VP2, and VP3 in a soluble fraction, a cytoplasmic cytoskeleton fract...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.61.2.516-525.1987
更新日期:1987-02-01 00:00:00
abstract::Replication-defective vaccine vectors based on vesicular stomatitis virus (VSV) lacking its envelope glycoprotein gene (G) are highly effective in animal models. However, such ΔG vectors are difficult to grow because they require complementation with the VSV G protein. In addition, the complementing G protein induces ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01852-10
更新日期:2011-03-01 00:00:00
abstract::Human immunodeficiency virus type 1 (HIV-1) strains can be separated into genetic subtypes based on phylogenetic analysis of the envelope gene. Once it had been shown that population-wide intrasubtype genetic variation of HIV-1 strains increases in the course of the AIDS epidemic, it remained uncertain whether HIV-1 s...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.9.6332-6338.1997
更新日期:1997-09-01 00:00:00
abstract::We have previously demonstrated that five open reading frames exist in the nucleotide sequence of the 81.2- to 85.0-map-unit (m.u.) segment of plaque isolate E of Autographa californica nuclear polyhedrosis virus (AcNPV) DNA. The corresponding polypeptides are 9.8, 12.1, 36.6, 25.0, and 48.2 kDa in size (C. Oellig, B....
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.1.89-97.1991
更新日期:1991-01-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03456-13
更新日期:2014-04-01 00:00:00
abstract::Current knowledge of human immunodeficiency virus type 1 envelope (Env) glycoprotein structure and function is based on studies of clade B viruses. We present evidence of sequence and structural differences in viral glycoprotein gp120 between clades B and C. In clade C, the C3 region alpha2-helix exhibits high sequenc...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01954-06
更新日期:2007-05-01 00:00:00
abstract:UNLABELLED:Semen enhances HIV infection in vitro, but how long it retains this activity has not been carefully examined. Immediately postejaculation, semen exists as a semisolid coagulum, which then converts to a more liquid form in a process termed liquefaction. We demonstrate that early during liquefaction, semen exh...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00269-14
更新日期:2014-07-01 00:00:00
abstract::Five monoclonal antibodies to the matrix (M) protein of Newcastle disease virus (NDV) Australia-Victoria (AV) strain were generated and characterized. In competitive antibody-binding assays, the antibodies fell into three discrete groups. The antigenic sites described by these antibody groups were designated M1, M2, a...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.62.2.586-593.1988
更新日期:1988-02-01 00:00:00
abstract::The ultrastructure of CV-1 cells infected with subacute sclerosing panencephalitis (SSPE) viruses was compared with that of CV-1 cells infected with the wild or Edmonston strain of measles virus. Both SSPE viruses and the measles viruses produced two types of nucleocapsid structures: smooth filaments, 15 to 17 nm in d...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.7.1.176-187.1971
更新日期:1971-01-01 00:00:00
abstract::Signal peptidase cleavage at the C-prM junction in the flavivirus structural polyprotein is inefficient in the absence of the cytoplasmic viral protease, which catalyzes cleavage at the COOH terminus of the C protein. The signal peptidase cleavage occurs efficiently in circumstances where the C protein is deleted or i...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.3.2141-2149.1998
更新日期:1998-03-01 00:00:00
abstract::Several viral determinants were shown to play a role in the ability of human immunodeficiency virus type 1 (HIV-1) to infect nondividing cells. In particular, Vpr and Gag matrix (MA) were recognized to be involved in the nuclear transport of the viral preintegration complex. The goal of the present study was to evalua...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.5.4104-4115.1998
更新日期:1998-05-01 00:00:00
abstract::Recent environmental and metagenomic studies have considerably increased the repertoire of archaeal viruses and suggested that they play important roles in nutrient cycling in the biosphere. However, very little is known about how they regulate their life cycles and interact with their hosts. Here, we report that the ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00841-20
更新日期:2020-07-30 00:00:00
abstract::Nef, an accessory protein of human and simian immunodeficiency viruses, is a critical determinant of pathogenesis that promotes the progression from infection to AIDS. The pathogenic effects of Nef are in large part dependent on its ability to downregulate the macrophage and T-cell coreceptor, CD4. It has been propose...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02725-06
更新日期:2007-04-01 00:00:00
abstract::Among the numerous immunological abnormalities observed in chronically human immunodeficiency virus (HIV)-infected individuals, perturbations in memory CD4 T cells are thought to contribute specifically to disease pathogenesis. Among these, functional imbalances in the frequencies of T regulatory cells (Tregs) and int...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02163-18
更新日期:2019-04-17 00:00:00
abstract::A sequence of polyadenylic acid, homogeneous in composition but heterogeneous in length, was isolated from complete pancreatic RNase digests of both middle and bottom RNAs of cowpea mosaic virus. The polyadenylic acid was 3'-terminal and occurred once per molecule. A fragment consisting of the polyadenylic acid and ap...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.26.2.243-248.1978
更新日期:1978-05-01 00:00:00
abstract::A ribonucleoprotein particle containing about 20% ribonucleic acid (RNA), and containing little if any phospholipid or glucosamine, was recovered in high yield after treatment of Schmidt-Ruppin strain of Rous sarcoma virus and B77 virus with the nonionic detergent Nonidet P-40. This structure, which probably derives f...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.10.5.1010-1020.1972
更新日期:1972-11-01 00:00:00
abstract::The major envelope glycoprotein of bovine leukemia virus was isolated by lectin-bound Sepharose and DEAE-cellulose column chromatography. This protein was shown to have a molecular weight of about 41,000 and to lack detectable immunological cross-reactivity with glycoproteins of other oncornaviruses. Sera obtained fro...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.23.2.443-447.1977
更新日期:1977-08-01 00:00:00
abstract::Cells latently infected with herpes simplex virus (HSV) contain nucleosomal DNA similar to that of host cell chromatin. Recent studies have demonstrated that histones in the latency-associated transcript (LAT) promoter and intron regions contain histone modifications permissive for transcription. However, those histon...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02447-06
更新日期:2007-05-01 00:00:00
abstract::"L-cell virion," obtained from chronically infected 929 L-cell lines, was purified on 70% sucrose pads and its ribonucleic acid (RNA) was extracted and analyzed on sucrose gradients. Two RNA components were isolated from the virion, a rapidly sedimenting species (82S) and a more slowly sedimenting species (6S). When t...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.4.1.31-35.1969
更新日期:1969-07-01 00:00:00
abstract:UNLABELLED:Noroviruses are the leading cause of acute gastroenteritis outbreaks worldwide. The majority of norovirus outbreaks are caused by genogroup II.4 (GII.4). Novel GII.4 strains emerge every 2 to 4 years and replace older variants as the dominant norovirus. Novel variants emerge through a combination of recombin...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02494-14
更新日期:2014-12-01 00:00:00
abstract::Upon immunization and restimulation with tumors induced by the endogenous AKR/Gross murine leukemia virus (MuLV), C57BL/6 mice generate vigorous H-2K(b)-restricted cytotoxic T-lymphocyte (CTL) responses to a determinant (KSPWFTTL) derived from the p15E transmembrane portion of the viral envelope glycoprotein. By contr...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.8.3924-3928.2000
更新日期:2000-04-01 00:00:00
abstract::Repeated passages of vaccinia virus in increasing concentrations of hydroxyurea followed by plaque purification resulted in the isolation of variants capable of growth in 5 mM hydroxyurea, a drug concentration which inhibited the reproduction of wild-type vaccinia virus 1,000-fold. Analyses of viral protein synthesis ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.60.2.506-514.1986
更新日期:1986-11-01 00:00:00